We have in place support for parsing #pragma FENV_ACCESS, but that

information is then discarded with a warning to the user that we don't 
support it.

This patch gets us one step closer by getting the info down into the 
AST in most cases.

Reviewed by:	rsmith
Differential Revision:	https://reviews.llvm.org/D49865

llvm-svn: 339693

1 files changed, 12 insertions, 0 deletions

diff --git a/clang/lib/Sema/SemaAttr.cpp b/clang/lib/Sema/SemaAttr.cpp
index 056d031fd83..8024e1a0515 100644
--- a/clang/lib/Sema/SemaAttr.cpp
+++ b/clang/lib/Sema/SemaAttr.cpp
@@ -773,6 +773,18 @@ void Sema::ActOnPragmaFPContract(LangOptions::FPContractModeKind FPC) {
   }
 }
 
+void Sema::ActOnPragmaFEnvAccess(LangOptions::FEnvAccessModeKind FPC) {
+  switch (FPC) {
+  case LangOptions::FEA_On:
+    FPFeatures.setAllowFEnvAccess();
+    break;
+  case LangOptions::FEA_Off:
+    FPFeatures.setDisallowFEnvAccess();
+    break;
+  }
+}
+
+
 void Sema::PushNamespaceVisibilityAttr(const VisibilityAttr *Attr,
                                        SourceLocation Loc) {
   // Visibility calculations will consider the namespace's visibility.